GULZAR QUDAYBERDIEVNA SEYTANOVA, Umarova Dilafruz Razzakberdiyevna, and Laylo Alimjanova. “AUTHENTIC MATERIALS AND THEIR USAGE”. Journal of new century innovations 18, no. 4 (December 12, 2022): 33–35. Accessed February 20, 2025. https://newjournal.org/new/article/view/1386.